Coolant temp sender part No?

[Evgeny Sokolovsky <esokolov@Glue.umd.edu>]

Hi all,
 Does anyone know an Audi part number for
coolant temperature sender, the one on
the top of the cylinder head coolant outlet?
It's a 1-wire sender, I think it's for ECU.
The engine code is MC ('86 5kcsT).
              TIA
                 Eugene

'86 5kcsT 5-spd, 139K miles